I just received an update on this and it looks like the decision was made to start the event next Sunday (Jan 9th) so that it’ll run the full intended duration. The “fix” they’re working on getting applied to the game today will update the calendar and get the events scheduled that were missing.
Apologies for not having a clearer understanding of the plan for this fix and for setting an incorrect expectation 
It’ll go back to the “first Sunday of the month” schedule from February onward.
Edit: Actually looks like the hotfix was just applied so the calendar now shows the DMF starting on Jan 9th and then on Feb 6th.